<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>列表过滤</title>
    <script src="js/vue.js"></script>
</head>
<body>
<div id="root">
    <h2>人员列表</h2>
    <input type="text" placeholder="请输入名字" v-model="keyWord"/>
    <ul>
        <li v-for="(p,index) of filPerson" :key="index">
            {{p.name}}-{{p.age}}-{{p.sex}}
        </li>
    </ul>
</div>
<script>
    Vue.config.productionTip = false;

    new Vue({
        el: "#root",
        data: {
            keyWord: "",
            persons: [
                {id: '001', name: '马冬梅', age: 19, sex: '女'},
                {id: '002', name: '周冬雨', age: 20, sex: '女'},
                {id: '003', name: '周杰伦', age: 21, sex: '男'},
                {id: '004', name: '温兆伦', age: 22, sex: '男'}
            ],
            filPerson: [],
        },
        watch: {
            keyWord: {
                immediate: true,
                handler(val) {
                    this.filPerson = this.persons.filter((p) => {
                        // 如果字符串不包含该字符返回-1，否则返回索引 空串都匹配
                        return p.name.indexOf(val) !== -1;
                    })
                }
            }
        }
    });
    // new Vue({
    //     el: "#root",
    //     data: {
    //         keyWord: "",
    //         persons: [
    //             {id: '001', name: '马冬梅', age: 19, sex: '女'},
    //             {id: '002', name: '周冬雨', age: 20, sex: '女'},
    //             {id: '003', name: '周杰伦', age: 21, sex: '男'},
    //             {id: '004', name: '温兆伦', age: 22, sex: '男'}
    //         ]
    //     },
    //     computed: {
    //         filPerson() {
    //             return this.persons.filter((p) => {
    //                 return p.name.indexOf(this.keyWord) !== -1;
    //             })
    //         }
    //     }
    // });
</script>
</body>
</html>